So here's my story. My last ex, kinda on the thick side, great rack (34c), meh face, short, and i can pound that thing all night long if i want. Missionary, doggie, sideways, you name it. I love doing her from behind, I can rail that thing until she beg me to stop, good days. My current gf, tall, skinny, ok rack, GREAT ass . But when i sex her, i cant last long. Especially when i m doing her doggie style, couple pumps and i m done. WTF?! Even when just regular missionary style, if i am constantly moving in and out, max i would last 3 to 4 mins . I dont understand why. Anyone experience this before? Any advice? .